I'm have this strong hunch that writes to $F003 are latched on (at least) two of the pins on the SS88006, and those pins are connected to the µPD775x /PLAY and /RESET pins ... CPU D2 through D7 are connected to µPD775x I0 through I5

From tracing pictures of the PCB, I was able to get half the SS88006's pinout:

Who is online

You cannot post new topics in this forumYou cannot reply to topics in this forumYou cannot edit your posts in this forumYou cannot delete your posts in this forumYou cannot post attachments in this forum